www.pudn.com > chenjing.rar > LibraryDlg.cpp

// LibraryDlg.cpp : implementation file 
// 
 
#include "stdafx.h" 
#include "Library.h" 
#include "LibraryDlg.h" 
#include "MainDlg.h" 
#include "LoginSet.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// CLibraryDlg dialog 
 
CLibraryDlg::CLibraryDlg(CWnd* pParent /*=NULL*/) 
	: CDialog(CLibraryDlg::IDD, pParent) 
{ 
	//{{AFX_DATA_INIT(CLibraryDlg) 
	m_strPassword = _T(""); 
	m_strUsername = _T(""); 
	//}}AFX_DATA_INIT 
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32 
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); 
} 
 
void CLibraryDlg::DoDataExchange(CDataExchange* pDX) 
{ 
	CDialog::DoDataExchange(pDX); 
	//{{AFX_DATA_MAP(CLibraryDlg) 
	DDX_Text(pDX, IDC_EDIT_PASSWD, m_strPassword); 
	DDX_Text(pDX, IDC_EDIT_USER, m_strUsername); 
	//}}AFX_DATA_MAP 
} 
 
BEGIN_MESSAGE_MAP(CLibraryDlg, CDialog) 
	//{{AFX_MSG_MAP(CLibraryDlg) 
	ON_WM_QUERYDRAGICON() 
	ON_BN_CLICKED(IDC_BUTTON_OK, OnButtonOk) 
	ON_BN_CLICKED(IDC_BUTTON_CANCEL, OnButtonCancel) 
	ON_WM_CLOSE() 
	ON_WM_LBUTTONDBLCLK() 
	ON_WM_CREATE() 
	ON_MESSAGE(DM_GETDEFID, OnGetDefID) 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CLibraryDlg message handlers 
 
BOOL CLibraryDlg::OnInitDialog() 
{ 
	CDialog::OnInitDialog(); 
 
	// Set the icon for this dialog.  The framework does this automatically 
	//  when the application's main window is not a dialog 
	SetIcon(m_hIcon, TRUE);			// Set big icon 
	SetIcon(m_hIcon, FALSE);		// Set small icon 
	 
	// TODO: Add extra initialization here 
	count=0; 
 
	return TRUE;  // return TRUE  unless you set the focus to a control 
} 
 
// If you add a minimize button to your dialog, you will need the code below 
//  to draw the icon.  For MFC applications using the document/view model, 
//  this is automatically done for you by the framework. 
 
 
 
HCURSOR CLibraryDlg::OnQueryDragIcon() 
{ 
	return (HCURSOR) m_hIcon; 
} 
 
void CLibraryDlg::OnButtonOk()  
{ 
	UpdateData(); 
	if(m_strUsername.IsEmpty()) 
	{ 
		MessageBox("请输入用户名!","登录系统",MB_OK|MB_ICONEXCLAMATION); 
		m_strUsername.Empty(); 
		UpdateData(FALSE); 
		return; 
	} 
 
	if(!m_database.IsOpen()) 
	{ 
		//连接数据源 
		if(!m_database.Open(_T("Library"))) 
		{ 
			MessageBox("无法连接数据库!","图书管理系统",MB_OK|MB_ICONINFORMATION); 
			return; 
		} 
	} 
	 
	CLoginSet *m_pLogset=new CLoginSet(&m_database); 
 
	//编写SQL语句 
	CString strSQL; 
	strSQL.Format("select * from Admin_Info where User_Name='%s' AND Password='%s'",m_strUsername,m_strPassword); 
	//编写SQL语句结束 
 
	m_pLogset->Open(AFX_DB_USE_DEFAULT_TYPE,strSQL); 
	 
	if(m_pLogset->GetRecordCount()==0) 
	{ 
		if(count<5) 
		{ 
			MessageBox("错误!","图书管理系统",MB_OK|MB_ICONERROR); 
			count++; 
			m_strPassword.Empty(); 
			m_strUsername.Empty(); 
			UpdateData(FALSE); 
		} 
		else 
		{ 
			m_database.Close(); 
			MessageBox("错误!","图书管理系统"); 
			OnOK(); 
		} 
	} 
	else 
	{ 
		m_database.Close(); 
		CMainDlg m_Main; 
		m_Main.m_user=m_strUsername; 
		MessageBox("欢迎使用~_~!","图书管理系统"); 
		m_Main.DoModal(); 
		OnOK();			 
	} 
} 
 
void CLibraryDlg::OnButtonCancel()  
{ 
	 
	int iResult=MessageBox("确定要退出?","图书管理系统",MB_YESNO|MB_ICONQUESTION); 
	if(iResult==IDYES) 
	{ 
		if(m_database.IsOpen()) 
			m_database.Close(); 
		OnOK(); 
	} 
} 
 
void CLibraryDlg::OnClose()  
{ 
	OnButtonCancel();	 
} 
 
void CLibraryDlg::OnLButtonDblClk(UINT nFlags, CPoint point)  
{ 
	MessageBox("你需要做什么?","图书管理系统",MB_ICONQUESTION);	 
	CDialog::OnLButtonDblClk(nFlags, point); 
} 
 
int CLibraryDlg::OnCreate(LPCREATESTRUCT lpCreateStruct)  
{ 
	if (CDialog::OnCreate(lpCreateStruct) == -1) 
		return -1;	 
	return 0; 
} 
LRESULT CLibraryDlg::OnGetDefID(WPARAM wp, LPARAM lp)  
{ 
    return MAKELONG(0,DC_HASDEFID);  
}